dc.contributor.author |
Kharintsev S. |
|
dc.contributor.author |
Kamalova D. |
|
dc.contributor.author |
Salakhov M. |
|
dc.contributor.author |
Sevastianov A. |
|
dc.date.accessioned |
2018-09-17T21:32:28Z |
|
dc.date.available |
2018-09-17T21:32:28Z |
|
dc.date.issued |
2005 |
|
dc.identifier.issn |
1386-1425 |
|
dc.identifier.uri |
https://dspace.kpfu.ru/xmlui/handle/net/135125 |
|
dc.description.abstract |
An approach based on the using of the continuous wavelet transform (CWT) in derivative spectrometry (DS) is considered. Within the framework of the approach we develop a numerical differentiation algorithm with continuous wavelets for improving resolution of composite spectra. The wavelet-based derivative spectrometry (WDS) method results in best contrast in differential curves compared to the conventional derivative spectrometry method. A main advantage is that, as opposed to DS, WDS gives stable estimations of derivative in the wavelet domain without using the regularization. A wavelet shape and the information redundancy are of the greatest importance when the continuous wavelet transform is used. As an appropriate wavelet we offer to utilize the nth derivative of a component with a priori known shape. The energy distribution into scales allows one to determine a unique wavelet projection and in that way to avoid the information redundancy. A comparative study of WDS and DS with the statistical regularization method (SRM) is made; in particular, limits of applicability of these are given. Examples of the application of both DS and WDS for improving resolution of synthetic composite bands and real-world composite ones coming from molecular spectroscopy are given. © 2004 Elsevier B.V. All rights reserved. |
|
dc.relation.ispartofseries |
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy |
|
dc.subject |
Derivative spectrometry |
|
dc.subject |
Resolution |
|
dc.subject |
Wavelet transform |
|
dc.title |
Resolution enhancement of composite spectra using wavelet-based derivative spectrometry |
|
dc.type |
Article |
|
dc.relation.ispartofseries-issue |
1-2 |
|
dc.relation.ispartofseries-volume |
61 |
|
dc.collection |
Публикации сотрудников КФУ |
|
dc.relation.startpage |
149 |
|
dc.source.id |
SCOPUS13861425-2005-61-12-SID9544249363 |
|